Income Taxes Components of Deferred Taxes (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Components of Deferred Tax Assets
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	$ 1,110	$ 1,210
Deferred Tax Assets, Inventory	5,670	5,730
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other	34,880	32,110
Deferred Tax Assets, Operating Loss and Credit Carryforwards	6,740	5,190
Deferred Tax Assets, Gross	48,400	44,240
Deferred Tax Assets, Valuation Allowance	(4,440)	(2,950)
Deferred Tax Assets, Net of Valuation Allowance	43,960	41,290
Components of Deferred Tax Liabilities
Deferred Tax Liabilities, Property, Plant and Equipment	(19,800)	(20,330)
Deferred Tax Liabilities, Goodwill and Intangible Assets	(60,990)	(63,490)
Deferred Tax Liabilities, Other	(3,860)	(2,120)
Deferred Tax Liabilities, Gross	(84,650)	(85,940)
Deferred Tax Liabilities, Net	$ (40,690)	$ (44,650)